The cold gas and dust properties of red star-forming galaxies

Author:

Chown Ryan12ORCID,Parker Laura2ORCID,Wilson Christine D2ORCID,Brown Toby23,Evans Fraser4ORCID,Gao Yang5,Hwang Ho Seong67,Lin Lihwai8,Saintonge Amelie9ORCID,Sargent Mark1011,Smith Matthew12ORCID,Xiao Ting13

Affiliation:

1. Department of Physics & Astronomy, University of Western Ontario , London, ON N6A 3K7, Canada

2. Department of Physics & Astronomy, McMaster University , Hamilton, ON L8S 4M1, Canada

3. Herzberg Astronomy and Astrophysics Research Centre, National Research Council of Canada , 5071 West Saanich Rd., Victoria, BC V9E 2E7, Canada

4. Leiden Observatory, Leiden University , PO Box 9513, NL-2300 RA Leiden, the Netherlands

5. Purple Mountain Observatory & Key Lab of Radio Astronomy, Chinese Academy of Sciences , Nanjing 210034, China

6. Astronomy Program, Department of Physics and Astronomy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea

7. SNU Astronomy Research Center, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea

8. Institute of Astronomy & Astrophysics, Academia Sinica , Taipei 10617, Taiwan

9. Department of Physics and Astronomy, University College London , Gower Street, London WC1E 6BT, UK

10. Astronomy Centre, Department of Physics & Astronomy, University of Sussex , Brighton, BN1 9QH England, UK

11. International Space Science Institute (ISSI) , Hallerstrasse 6, CH-3012 Bern, Switzerland

12. School of Physics & Astronomy, Cardiff University , The Parade, Cardiff CF24 3AA, UK

13. Department of Physics, Zhejiang University , Hangzhou, Zhejiang 310027, China

Abstract

ABSTRACT We study the cold gas and dust properties for a sample of red star-forming galaxies called ‘red misfits.’ We collect single-dish CO observations and H i observations from representative samples of low-redshift galaxies, as well as our own James Clerk Maxwell Telescope CO observations of red misfits. We also obtain SCUBA-2 850 $\mu$m observations for a subset of these galaxies. With these data we compare the molecular gas, total cold gas, and dust properties of red misfits against those of their blue counterparts (‘blue actives’) taking non-detections into account using a survival analysis technique. We compare these properties at fixed position in the log SFR–log M⋆ plane, as well as versus offset from the star-forming main sequence. Compared to blue actives, red misfits have slightly longer molecular gas depletion times, similar total gas depletion times, significantly lower molecular- and total-gas mass fractions, lower dust-to-stellar mass ratios, similar dust-to-gas ratios, and a significantly flatter slope in the log Mmol–log M⋆ plane. Our results suggest that red misfits as a population are likely quenching due to a shortage in gas supply.

Funder

National Astronomical Observatory of Japan

Korea Astronomy and Space Science Institute

Science and Technology Facilities Council

National Natural Science Foundation of China

Swiss National Science Foundation

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Molecular gas scaling relations for local star-forming galaxies in the low-M* regime;Astronomy & Astrophysics;2024-07

2. Emergence of red, star-forming galaxies (red misfits) in a ΛCDM universe;Monthly Notices of the Royal Astronomical Society;2024-06-14

3. Correction to: The cold gas and dust properties of red star-forming galaxies;Monthly Notices of the Royal Astronomical Society;2022-12-07

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